Something went wrong. Try again.
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945// SPDX-License-Identifier: GPL-2.0-only/* * Synaptics TouchPad PS/2 mouse driver * * 2003 Dmitry Torokhov <dtor@mail.ru> * Added support for pass-through port. Special thanks to Peter Berg Larsen * for explaining various Synaptics quirks. * * 2003 Peter Osterlund <petero2@telia.com> * Ported to 2.5 input device infrastructure. * * Copyright (C) 2001 Stefan Gmeiner <riddlebox@freesurf.ch> * start merging tpconfig and gpm code to a xfree-input module * adding some changes and extensions (ex. 3rd and 4th button) * * Copyright (c) 1997 C. Scott Ananian <cananian@alumni.priceton.edu> * Copyright (c) 1998-2000 Bruce Kalk <kall@compass.com> * code for the special synaptics commands (from the tpconfig-source) * * Trademarks are the property of their respective owners. */
#include <linux/module.h>#include <linux/delay.h>#include <linux/dmi.h>#include <linux/input/mt.h>#include <linux/serio.h>#include <linux/libps2.h>#include <linux/rmi.h>#include <linux/i2c.h>#include <linux/slab.h>#include "psmouse.h"#include "synaptics.h"
/* * The x/y limits are taken from the Synaptics TouchPad interfacing Guide, * section 2.3.2, which says that they should be valid regardless of the * actual size of the sensor. * Note that newer firmware allows querying device for maximum useable * coordinates. */#define XMIN 0#define XMAX 6143#define YMIN 0#define YMAX 6143#define XMIN_NOMINAL 1472#define XMAX_NOMINAL 5472#define YMIN_NOMINAL 1408#define YMAX_NOMINAL 4448
/* Size in bits of absolute position values reported by the hardware */#define ABS_POS_BITS 13
/* * These values should represent the absolute maximum value that will * be reported for a positive position value. Some Synaptics firmware * uses this value to indicate a finger near the edge of the touchpad * whose precise position cannot be determined. * * At least one touchpad is known to report positions in excess of this * value which are actually negative values truncated to the 13-bit * reporting range. These values have never been observed to be lower * than 8184 (i.e. -8), so we treat all values greater than 8176 as * negative and any other value as positive. */#define X_MAX_POSITIVE 8176#define Y_MAX_POSITIVE 8176
/* maximum ABS_MT_POSITION displacement (in mm) */#define DMAX 10
/***************************************************************************** * Stuff we need even when we do not want native Synaptics support ****************************************************************************/
/* * Set the synaptics touchpad mode byte by special commands */static int synaptics_mode_cmd(struct psmouse *psmouse, u8 mode){ u8 param[1]; int error;
error = ps2_sliced_command(&psmouse->ps2dev, mode); if (error) return error;
param[0] = SYN_PS_SET_MODE2; error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE); if (error) return error;
return 0;}
int synaptics_detect(struct psmouse *psmouse, bool set_properties){ struct ps2dev *ps2dev = &psmouse->ps2dev; u8 param[4] = { 0 };
ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES); ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
if (param[1] != 0x47) return -ENODEV;
if (set_properties) { psmouse->vendor = "Synaptics"; psmouse->name = "TouchPad"; }
return 0;}
void synaptics_reset(struct psmouse *psmouse){ /* reset touchpad back to relative mode, gestures enabled */ synaptics_mode_cmd(psmouse, 0);}
#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
/* This list has been kindly provided by Synaptics. */static const char * const topbuttonpad_pnp_ids[] = { "LEN0017", "LEN0018", "LEN0019", "LEN0023", "LEN002A", "LEN002B", "LEN002C", "LEN002D", "LEN002E", "LEN0033", /* Helix */ "LEN0034", /* T431s, L440, L540, T540, W540, X1 Carbon 2nd */ "LEN0035", /* X240 */ "LEN0036", /* T440 */ "LEN0037", /* X1 Carbon 2nd */ "LEN0038", "LEN0039", /* T440s */ "LEN0041", "LEN0042", /* Yoga */ "LEN0045", "LEN0047", "LEN2000", /* S540 */ "LEN2001", /* Edge E431 */ "LEN2002", /* Edge E531 */ "LEN2003", "LEN2004", /* L440 */ "LEN2005", "LEN2006", /* Edge E440/E540 */ "LEN2007", "LEN2008", "LEN2009", "LEN200A", "LEN200B", NULL};
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUSstatic const char * const smbus_pnp_ids[] = { /* all of the topbuttonpad_pnp_ids are valid, we just add some extras */ "DLL060d", /* Dell Precision M3800 */ "LEN0048", /* X1 Carbon 3 */ "LEN0046", /* X250 */ "LEN0049", /* Yoga 11e */ "LEN004a", /* W541 */ "LEN005b", /* P50 */ "LEN005e", /* T560 */ "LEN006c", /* T470s */ "LEN007a", /* T470s */ "LEN0071", /* T480 */ "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */ "LEN0073", /* X1 Carbon G5 (Elantech) */ "LEN0091", /* X1 Carbon 6 */ "LEN0092", /* X1 Carbon 6 */ "LEN0093", /* T480 */ "LEN0096", /* X280 */ "LEN0097", /* X280 -> ALPS trackpoint */ "LEN0099", /* X1 Extreme Gen 1 / P1 Gen 1 */ "LEN009b", /* T580 */ "LEN0402", /* X1 Extreme Gen 2 / P1 Gen 2 */ "LEN040f", /* P1 Gen 3 */ "LEN0411", /* L14 Gen 1 */ "LEN200f", /* T450s */ "LEN2044", /* L470 */ "LEN2054", /* E480 */ "LEN2055", /* E580 */ "LEN2058", /* E490 */ "LEN2068", /* T14 Gen 1 */ "SYN1221", /* TUXEDO InfinityBook Pro 14 v5 */ "SYN3003", /* HP EliteBook 850 G1 */ "SYN3015", /* HP EliteBook 840 G2 */ "SYN3052", /* HP EliteBook 840 G4 */ "SYN3221", /* HP 15-ay000 */ "SYN323d", /* HP Spectre X360 13-w013dx */ "SYN3257", /* HP Envy 13-ad105ng */ "TOS01f6", /* Dynabook Portege X30L-G */ "TOS0213", /* Dynabook Portege X30-D */ NULL};#endif
static const char * const forcepad_pnp_ids[] = { "SYN300D", "SYN3014", NULL};
/* * Send a command to the synaptics touchpad by special commands */static int synaptics_send_cmd(struct psmouse *psmouse, u8 cmd, u8 *param){ int error;
error = ps2_sliced_command(&psmouse->ps2dev, cmd); if (error) return error;
error = ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO); if (error) return error;
return 0;}
static int synaptics_query_int(struct psmouse *psmouse, u8 query_cmd, u32 *val){ int error; union { __be32 be_val; char buf[4]; } resp = { 0 };
error = synaptics_send_cmd(psmouse, query_cmd, resp.buf + 1); if (error) return error;
*val = be32_to_cpu(resp.be_val); return 0;}
/* * Identify Touchpad * See also the SYN_ID_* macros */static int synaptics_identify(struct psmouse *psmouse, struct synaptics_device_info *info){ int error;
error = synaptics_query_int(psmouse, SYN_QUE_IDENTIFY, &info->identity); if (error) return error;
return SYN_ID_IS_SYNAPTICS(info->identity) ? 0 : -ENXIO;}
/* * Read the model-id bytes from the touchpad * see also SYN_MODEL_* macros */static int synaptics_model_id(struct psmouse *psmouse, struct synaptics_device_info *info){ return synaptics_query_int(psmouse, SYN_QUE_MODEL, &info->model_id);}
/* * Read the firmware id from the touchpad */static int synaptics_firmware_id(struct psmouse *psmouse, struct synaptics_device_info *info){ return synaptics_query_int(psmouse, SYN_QUE_FIRMWARE_ID, &info->firmware_id);}
/* * Read the board id and the "More Extended Queries" from the touchpad * The board id is encoded in the "QUERY MODES" response */static int synaptics_query_modes(struct psmouse *psmouse, struct synaptics_device_info *info){ u8 bid[3]; int error;
/* firmwares prior 7.5 have no board_id encoded */ if (SYN_ID_FULL(info->identity) < 0x705) return 0;
error = synaptics_send_cmd(psmouse, SYN_QUE_MODES, bid); if (error) return error;
info->board_id = ((bid[0] & 0xfc) << 6) | bid[1];
if (SYN_MEXT_CAP_BIT(bid[0])) return synaptics_query_int(psmouse, SYN_QUE_MEXT_CAPAB_10, &info->ext_cap_10);
return 0;}
/* * Read the capability-bits from the touchpad * see also the SYN_CAP_* macros */static int synaptics_capability(struct psmouse *psmouse, struct synaptics_device_info *info){ int error;
error = synaptics_query_int(psmouse, SYN_QUE_CAPABILITIES, &info->capabilities); if (error) return error;
info->ext_cap = info->ext_cap_0c = 0;
/* * Older firmwares had submodel ID fixed to 0x47 */ if (SYN_ID_FULL(info->identity) < 0x705 && SYN_CAP_SUBMODEL_ID(info->capabilities) != 0x47) { return -ENXIO; }
/* * Unless capExtended is set the rest of the flags should be ignored */ if (!SYN_CAP_EXTENDED(info->capabilities)) info->capabilities = 0;
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 1) { error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB, &info->ext_cap); if (error) { psmouse_warn(psmouse, "device claims to have extended capabilities, but I'm not able to read them.\n"); } else { /* * if nExtBtn is greater than 8 it should be considered * invalid and treated as 0 */ if (SYN_CAP_MULTI_BUTTON_NO(info->ext_cap) > 8) info->ext_cap &= ~SYN_CAP_MB_MASK; } }
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 4) { error = synaptics_query_int(psmouse, SYN_QUE_EXT_CAPAB_0C, &info->ext_cap_0c); if (error) psmouse_warn(psmouse, "device claims to have extended capability 0x0c, but I'm not able to read it.\n"); }
return 0;}
/* * Read touchpad resolution and maximum reported coordinates * Resolution is left zero if touchpad does not support the query */static int synaptics_resolution(struct psmouse *psmouse, struct synaptics_device_info *info){ u8 resp[3]; int error;
if (SYN_ID_MAJOR(info->identity) < 4) return 0;
error = synaptics_send_cmd(psmouse, SYN_QUE_RESOLUTION, resp); if (!error) { if (resp[0] != 0 && (resp[1] & 0x80) && resp[2] != 0) { info->x_res = resp[0]; /* x resolution in units/mm */ info->y_res = resp[2]; /* y resolution in units/mm */ } }
if (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 5 && SYN_CAP_MAX_DIMENSIONS(info->ext_cap_0c)) { error = synaptics_send_cmd(psmouse, SYN_QUE_EXT_MAX_COORDS, resp); if (error) { psmouse_warn(psmouse, "device claims to have max coordinates query, but I'm not able to read it.\n"); } else { info->x_max = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); info->y_max = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); psmouse_info(psmouse, "queried max coordinates: x [..%d], y [..%d]\n", info->x_max, info->y_max); } }
if (SYN_CAP_MIN_DIMENSIONS(info->ext_cap_0c) && (SYN_EXT_CAP_REQUESTS(info->capabilities) >= 7 || /* * Firmware v8.1 does not report proper number of extended * capabilities, but has been proven to report correct min * coordinates. */ SYN_ID_FULL(info->identity) == 0x801)) { error = synaptics_send_cmd(psmouse, SYN_QUE_EXT_MIN_COORDS, resp); if (error) { psmouse_warn(psmouse, "device claims to have min coordinates query, but I'm not able to read it.\n"); } else { info->x_min = (resp[0] << 5) | ((resp[1] & 0x0f) << 1); info->y_min = (resp[2] << 5) | ((resp[1] & 0xf0) >> 3); psmouse_info(psmouse, "queried min coordinates: x [%d..], y [%d..]\n", info->x_min, info->y_min); } }
return 0;}
static int synaptics_query_hardware(struct psmouse *psmouse, struct synaptics_device_info *info){ int error;
memset(info, 0, sizeof(*info));
error = synaptics_identify(psmouse, info); if (error) return error;
error = synaptics_model_id(psmouse, info); if (error) return error;
error = synaptics_firmware_id(psmouse, info); if (error) return error;
error = synaptics_query_modes(psmouse, info); if (error) return error;
error = synaptics_capability(psmouse, info); if (error) return error;
error = synaptics_resolution(psmouse, info); if (error) return error;
return 0;}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
static bool cr48_profile_sensor;
#define ANY_BOARD_ID 0struct min_max_quirk { const char * const *pnp_ids; struct { u32 min, max; } board_id; u32 x_min, x_max, y_min, y_max;};
static const struct min_max_quirk min_max_pnpid_table[] = { { (const char * const []){"LEN0033", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5052, 2258, 4832 }, { (const char * const []){"LEN0042", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1232, 5710, 1156, 4696 }, { (const char * const []){"LEN0034", "LEN0036", "LEN0037", "LEN0039", "LEN2002", "LEN2004", NULL}, {ANY_BOARD_ID, 2961}, 1024, 5112, 2024, 4832 }, { (const char * const []){"LEN2000", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5113, 2021, 4832 }, { (const char * const []){"LEN2001", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1024, 5022, 2508, 4832 }, { (const char * const []){"LEN2006", NULL}, {2691, 2691}, 1024, 5045, 2457, 4832 }, { (const char * const []){"LEN2006", NULL}, {ANY_BOARD_ID, ANY_BOARD_ID}, 1264, 5675, 1171, 4688 }, { }};
/***************************************************************************** * Synaptics communications functions ****************************************************************************/
/* * Synaptics touchpads report the y coordinate from bottom to top, which is * opposite from what userspace expects. * This function is used to invert y before reporting. */static int synaptics_invert_y(int y){ return YMAX_NOMINAL + YMIN_NOMINAL - y;}
/* * Apply quirk(s) if the hardware matches */static void synaptics_apply_quirks(struct psmouse *psmouse, struct synaptics_device_info *info){ int i;
for (i = 0; min_max_pnpid_table[i].pnp_ids; i++) { if (!psmouse_matches_pnp_id(psmouse, min_max_pnpid_table[i].pnp_ids)) continue;
if (min_max_pnpid_table[i].board_id.min != ANY_BOARD_ID && info->board_id < min_max_pnpid_table[i].board_id.min) continue;
if (min_max_pnpid_table[i].board_id.max != ANY_BOARD_ID && info->board_id > min_max_pnpid_table[i].board_id.max) continue;
info->x_min = min_max_pnpid_table[i].x_min; info->x_max = min_max_pnpid_table[i].x_max; info->y_min = min_max_pnpid_table[i].y_min; info->y_max = min_max_pnpid_table[i].y_max; psmouse_info(psmouse, "quirked min/max coordinates: x [%d..%d], y [%d..%d]\n", info->x_min, info->x_max, info->y_min, info->y_max); break; }}
static bool synaptics_has_agm(struct synaptics_data *priv){ return (SYN_CAP_ADV_GESTURE(priv->info.ext_cap_0c) || SYN_CAP_IMAGE_SENSOR(priv->info.ext_cap_0c));}
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse){ static u8 param = 0xc8; int error;
error = ps2_sliced_command(&psmouse->ps2dev, SYN_QUE_MODEL); if (error) return error;
error = ps2_command(&psmouse->ps2dev, ¶m, PSMOUSE_CMD_SETRATE); if (error) return error;
return 0;}
static int synaptics_set_mode(struct psmouse *psmouse){ struct synaptics_data *priv = psmouse->private; int error;
priv->mode = 0; if (priv->absolute_mode) priv->mode |= SYN_BIT_ABSOLUTE_MODE; if (priv->disable_gesture) priv->mode |= SYN_BIT_DISABLE_GESTURE; if (psmouse->rate >= 80) priv->mode |= SYN_BIT_HIGH_RATE; if (SYN_CAP_EXTENDED(priv->info.capabilities)) priv->mode |= SYN_BIT_W_MODE;
error = synaptics_mode_cmd(psmouse, priv->mode); if (error) return error;
if (priv->absolute_mode && synaptics_has_agm(priv)) { error = synaptics_set_advanced_gesture_mode(psmouse); if (error) { psmouse_err(psmouse, "Advanced gesture mode init failed: %d\n", error); return error; } }
return 0;}
static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate){ struct synaptics_data *priv = psmouse->private;
if (rate >= 80) { priv->mode |= SYN_BIT_HIGH_RATE; psmouse->rate = 80; } else { priv->mode &= ~SYN_BIT_HIGH_RATE; psmouse->rate = 40; }
synaptics_mode_cmd(psmouse, priv->mode);}
/***************************************************************************** * Synaptics pass-through PS/2 port support ****************************************************************************/static int synaptics_pt_write(struct serio *serio, u8 c){ struct psmouse *parent = psmouse_from_serio(serio->parent); u8 rate_param = SYN_PS_CLIENT_CMD; /* indicates that we want pass-through port */ int error;
error = ps2_sliced_command(&parent->ps2dev, c); if (error) return error;
error = ps2_command(&parent->ps2dev, &rate_param, PSMOUSE_CMD_SETRATE); if (error) return error;
return 0;}
static int synaptics_pt_start(struct serio *serio){ struct psmouse *parent = psmouse_from_serio(serio->parent); struct synaptics_data *priv = parent->private;
guard(serio_pause_rx)(parent->ps2dev.serio); priv->pt_port = serio;
return 0;}
static void synaptics_pt_stop(struct serio *serio){ struct psmouse *parent = psmouse_from_serio(serio->parent); struct synaptics_data *priv = parent->private;
guard(serio_pause_rx)(parent->ps2dev.serio); priv->pt_port = NULL;}
static int synaptics_pt_open(struct serio *serio){ struct psmouse *parent = psmouse_from_serio(serio->parent); struct synaptics_data *priv = parent->private;
guard(serio_pause_rx)(parent->ps2dev.serio); priv->pt_port_open = true;
return 0;}
static void synaptics_pt_close(struct serio *serio){ struct psmouse *parent = psmouse_from_serio(serio->parent); struct synaptics_data *priv = parent->private;
guard(serio_pause_rx)(parent->ps2dev.serio); priv->pt_port_open = false;}
static int synaptics_is_pt_packet(u8 *buf){ return (buf[0] & 0xFC) == 0x84 && (buf[3] & 0xCC) == 0xC4;}
static void synaptics_pass_pt_packet(struct synaptics_data *priv, u8 *packet){ struct serio *ptport;
ptport = priv->pt_port; if (!ptport) return;
serio_interrupt(ptport, packet[1], 0);
if (priv->pt_port_open) { struct psmouse *child = psmouse_from_serio(ptport);
if (child->state == PSMOUSE_ACTIVATED) { serio_interrupt(ptport, packet[4], 0); serio_interrupt(ptport, packet[5], 0); if (child->pktsize == 4) serio_interrupt(ptport, packet[2], 0); } }}
static void synaptics_pt_activate(struct psmouse *psmouse){ struct synaptics_data *priv = psmouse->private; struct psmouse *child = psmouse_from_serio(priv->pt_port);
/* adjust the touchpad to child's choice of protocol */ if (child) { if (child->pktsize == 4) priv->mode |= SYN_BIT_FOUR_BYTE_CLIENT; else priv->mode &= ~SYN_BIT_FOUR_BYTE_CLIENT;
if (synaptics_mode_cmd(psmouse, priv->mode)) psmouse_warn(psmouse, "failed to switch guest protocol\n"); }}
static void synaptics_pt_create(struct psmouse *psmouse){ struct serio *serio;
serio = kzalloc_obj(*serio); if (!serio) { psmouse_err(psmouse, "not enough memory for pass-through port\n"); return; }
serio->id.type = SERIO_PS_PSTHRU; strscpy(serio->name, "Synaptics pass-through", sizeof(serio->name)); strscpy(serio->phys, "synaptics-pt/serio0", sizeof(serio->phys)); serio->write = synaptics_pt_write; serio->start = synaptics_pt_start; serio->stop = synaptics_pt_stop; serio->open = synaptics_pt_open; serio->close = synaptics_pt_close; serio->parent = psmouse->ps2dev.serio;
psmouse->pt_activate = synaptics_pt_activate;
psmouse_info(psmouse, "serio: %s port at %s\n", serio->name, psmouse->phys); serio_register_port(serio);}
/***************************************************************************** * Functions to interpret the absolute mode packets ****************************************************************************/
static void synaptics_parse_agm(const u8 buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw){ struct synaptics_hw_state *agm = &priv->agm; int agm_packet_type;
agm_packet_type = (buf[5] & 0x30) >> 4; switch (agm_packet_type) { case 1: /* Gesture packet: (x, y, z) half resolution */ agm->w = hw->w; agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; break;
case 2: /* AGM-CONTACT packet: we are only interested in the count */ priv->agm_count = buf[1]; break;
default: break; }}
static void synaptics_parse_ext_buttons(const u8 buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw){ unsigned int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; unsigned int ext_mask = GENMASK(ext_bits - 1, 0);
hw->ext_buttons = buf[4] & ext_mask; hw->ext_buttons |= (buf[5] & ext_mask) << ext_bits;}
static int synaptics_parse_hw_state(const u8 buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw){ memset(hw, 0, sizeof(struct synaptics_hw_state));
if (SYN_MODEL_NEWABS(priv->info.model_id)) { hw->w = (((buf[0] & 0x30) >> 2) | ((buf[0] & 0x04) >> 1) | ((buf[3] & 0x04) >> 2));
if (synaptics_has_agm(priv) && hw->w == 2) { synaptics_parse_agm(buf, priv, hw); return 1; }
hw->x = (((buf[3] & 0x10) << 8) | ((buf[1] & 0x0f) << 8) | buf[4]); hw->y = (((buf[3] & 0x20) << 7) | ((buf[1] & 0xf0) << 4) | buf[5]); hw->z = buf[2];
hw->left = (buf[0] & 0x01) ? 1 : 0; hw->right = (buf[0] & 0x02) ? 1 : 0;
if (priv->is_forcepad) { /* * ForcePads, like Clickpads, use middle button * bits to report primary button clicks. * Unfortunately they report primary button not * only when user presses on the pad above certain * threshold, but also when there are more than one * finger on the touchpad, which interferes with * out multi-finger gestures. */ if (hw->z == 0) { /* No contacts */ priv->press = priv->report_press = false; } else if (hw->w >= 4 && ((buf[0] ^ buf[3]) & 0x01)) { /* * Single-finger touch with pressure above * the threshold. If pressure stays long * enough, we'll start reporting primary * button. We rely on the device continuing * sending data even if finger does not * move. */ if (!priv->press) { priv->press_start = jiffies; priv->press = true; } else if (time_after(jiffies, priv->press_start + msecs_to_jiffies(50))) { priv->report_press = true; } } else { priv->press = false; }
hw->left = priv->report_press;
} else if (SYN_CAP_CLICKPAD(priv->info.ext_cap_0c)) { /* * Clickpad's button is transmitted as middle button, * however, since it is primary button, we will report * it as BTN_LEFT. */ hw->left = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0;
} else if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) { hw->middle = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; if (hw->w == 2) hw->scroll = (s8)buf[1]; }
if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { hw->up = ((buf[0] ^ buf[3]) & 0x01) ? 1 : 0; hw->down = ((buf[0] ^ buf[3]) & 0x02) ? 1 : 0; }
if (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) > 0 && ((buf[0] ^ buf[3]) & 0x02)) { synaptics_parse_ext_buttons(buf, priv, hw); } } else { hw->x = (((buf[1] & 0x1f) << 8) | buf[2]); hw->y = (((buf[4] & 0x1f) << 8) | buf[5]);
hw->z = (((buf[0] & 0x30) << 2) | (buf[3] & 0x3F)); hw->w = (((buf[1] & 0x80) >> 4) | ((buf[0] & 0x04) >> 1));
hw->left = (buf[0] & 0x01) ? 1 : 0; hw->right = (buf[0] & 0x02) ? 1 : 0; }
/* * Convert wrap-around values to negative. (X|Y)_MAX_POSITIVE * is used by some firmware to indicate a finger at the edge of * the touchpad whose precise position cannot be determined, so * convert these values to the maximum axis value. */ if (hw->x > X_MAX_POSITIVE) hw->x -= 1 << ABS_POS_BITS; else if (hw->x == X_MAX_POSITIVE) hw->x = XMAX;
if (hw->y > Y_MAX_POSITIVE) hw->y -= 1 << ABS_POS_BITS; else if (hw->y == Y_MAX_POSITIVE) hw->y = YMAX;
return 0;}
static void synaptics_report_semi_mt_slot(struct input_dev *dev, int slot, bool active, int x, int y){ input_mt_slot(dev, slot); input_mt_report_slot_state(dev, MT_TOOL_FINGER, active); if (active) { input_report_abs(dev, ABS_MT_POSITION_X, x); input_report_abs(dev, ABS_MT_POSITION_Y, synaptics_invert_y(y)); }}
static void synaptics_report_semi_mt_data(struct input_dev *dev, const struct synaptics_hw_state *a, const struct synaptics_hw_state *b, int num_fingers){ if (num_fingers >= 2) { synaptics_report_semi_mt_slot(dev, 0, true, min(a->x, b->x), min(a->y, b->y)); synaptics_report_semi_mt_slot(dev, 1, true, max(a->x, b->x), max(a->y, b->y)); } else if (num_fingers == 1) { synaptics_report_semi_mt_slot(dev, 0, true, a->x, a->y); synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); } else { synaptics_report_semi_mt_slot(dev, 0, false, 0, 0); synaptics_report_semi_mt_slot(dev, 1, false, 0, 0); }}
static void synaptics_report_ext_buttons(struct psmouse *psmouse, const struct synaptics_hw_state *hw){ struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; int ext_bits = (SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap) + 1) >> 1; int i;
if (!SYN_CAP_MULTI_BUTTON_NO(priv->info.ext_cap)) return;
/* Bug in FW 8.1 & 8.2, buttons are reported only when ExtBit is 1 */ if ((SYN_ID_FULL(priv->info.identity) == 0x801 || SYN_ID_FULL(priv->info.identity) == 0x802) && !((psmouse->packet[0] ^ psmouse->packet[3]) & 0x02)) return;
if (!SYN_CAP_EXT_BUTTONS_STICK(priv->info.ext_cap_10)) { for (i = 0; i < ext_bits; i++) { input_report_key(dev, BTN_0 + 2 * i, hw->ext_buttons & BIT(i)); input_report_key(dev, BTN_1 + 2 * i, hw->ext_buttons & BIT(i + ext_bits)); } return; }
/* * This generation of touchpads has the trackstick buttons * physically wired to the touchpad. Re-route them through * the pass-through interface. */ if (priv->pt_port) { u8 pt_buttons;
/* The trackstick expects at most 3 buttons */ pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) | SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 | SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
serio_interrupt(priv->pt_port, PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA); serio_interrupt(priv->pt_port, pt_buttons, SERIO_OOB_DATA); }}
static void synaptics_report_buttons(struct psmouse *psmouse, const struct synaptics_hw_state *hw){ struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private;
input_report_key(dev, BTN_LEFT, hw->left); input_report_key(dev, BTN_RIGHT, hw->right);
if (SYN_CAP_MIDDLE_BUTTON(priv->info.capabilities)) input_report_key(dev, BTN_MIDDLE, hw->middle);
if (SYN_CAP_FOUR_BUTTON(priv->info.capabilities)) { input_report_key(dev, BTN_FORWARD, hw->up); input_report_key(dev, BTN_BACK, hw->down); }
synaptics_report_ext_buttons(psmouse, hw);}
static void synaptics_report_mt_data(struct psmouse *psmouse, const struct synaptics_hw_state *sgm, int num_fingers){ struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; const struct synaptics_hw_state *hw[2] = { sgm, &priv->agm }; struct input_mt_pos pos[2]; int slot[2], nsemi, i;
nsemi = clamp_val(num_fingers, 0, 2);
for (i = 0; i < nsemi; i++) { pos[i].x = hw[i]->x; pos[i].y = synaptics_invert_y(hw[i]->y); }
input_mt_assign_slots(dev, slot, pos, nsemi, DMAX * priv->info.x_res);
for (i = 0; i < nsemi; i++) { input_mt_slot(dev, slot[i]); input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x); input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y); input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z); }
input_mt_drop_unused(dev);
/* Don't use active slot count to generate BTN_TOOL events. */ input_mt_report_pointer_emulation(dev, false);
/* Send the number of fingers reported by touchpad itself. */ input_mt_report_finger_count(dev, num_fingers);
synaptics_report_buttons(psmouse, sgm);
input_sync(dev);}
static void synaptics_image_sensor_process(struct psmouse *psmouse, struct synaptics_hw_state *sgm){ struct synaptics_data *priv = psmouse->private; int num_fingers;
/* * Update mt_state using the new finger count and current mt_state. */ if (sgm->z == 0) num_fingers = 0; else if (sgm->w >= 4) num_fingers = 1; else if (sgm->w == 0) num_fingers = 2; else if (sgm->w == 1) num_fingers = priv->agm_count ? priv->agm_count : 3; else num_fingers = 4;
/* Send resulting input events to user space */ synaptics_report_mt_data(psmouse, sgm, num_fingers);}
static bool synaptics_has_multifinger(struct synaptics_data *priv){ if (SYN_CAP_MULTIFINGER(priv->info.capabilities)) return true;
/* Advanced gesture mode also sends multi finger data */ return synaptics_has_agm(priv);}
/* * called for each full received packet from the touchpad */static void synaptics_process_packet(struct psmouse *psmouse){ struct input_dev *dev = psmouse->dev; struct synaptics_data *priv = psmouse->private; struct synaptics_device_info *info = &priv->info; struct synaptics_hw_state hw; int num_fingers; int finger_width;
if (synaptics_parse_hw_state(psmouse->packet, priv, &hw)) return;
if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { synaptics_image_sensor_process(psmouse, &hw); return; }
if (hw.scroll) { priv->scroll += hw.scroll;
while (priv->scroll >= 4) { input_report_key(dev, BTN_BACK, !hw.down); input_sync(dev); input_report_key(dev, BTN_BACK, hw.down); input_sync(dev); priv->scroll -= 4; } while (priv->scroll <= -4) { input_report_key(dev, BTN_FORWARD, !hw.up); input_sync(dev); input_report_key(dev, BTN_FORWARD, hw.up); input_sync(dev); priv->scroll += 4; } return; }
if (hw.z > 0 && hw.x > 1) { num_fingers = 1; finger_width = 5; if (SYN_CAP_EXTENDED(info->capabilities)) { switch (hw.w) { case 0 ... 1: if (synaptics_has_multifinger(priv)) num_fingers = hw.w + 2; break; case 2: /* * SYN_MODEL_PEN(info->model_id): even if * the device supports pen, we treat it as * a single finger. */ break; case 4 ... 15: if (SYN_CAP_PALMDETECT(info->capabilities)) finger_width = hw.w; break; } } } else { num_fingers = 0; finger_width = 0; }
if (cr48_profile_sensor) { synaptics_report_mt_data(psmouse, &hw, num_fingers); return; }
if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) synaptics_report_semi_mt_data(dev, &hw, &priv->agm, num_fingers);
/* Post events * BTN_TOUCH has to be first as mousedev relies on it when doing * absolute -> relative conversion */ if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1); if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
if (num_fingers > 0) { input_report_abs(dev, ABS_X, hw.x); input_report_abs(dev, ABS_Y, synaptics_invert_y(hw.y)); } input_report_abs(dev, ABS_PRESSURE, hw.z);
if (SYN_CAP_PALMDETECT(info->capabilities)) input_report_abs(dev, ABS_TOOL_WIDTH, finger_width);
input_report_key(dev, BTN_TOOL_FINGER, num_fingers == 1); if (synaptics_has_multifinger(priv)) { input_report_key(dev, BTN_TOOL_DOUBLETAP, num_fingers == 2); input_report_key(dev, BTN_TOOL_TRIPLETAP, num_fingers == 3); }
synaptics_report_buttons(psmouse, &hw);
input_sync(dev);}
static bool synaptics_validate_byte(struct psmouse *psmouse, int idx, enum synaptics_pkt_type pkt_type){ static const u8 newabs_mask[] = { 0xC8, 0x00, 0x00, 0xC8, 0x00 }; static const u8 newabs_rel_mask[] = { 0xC0, 0x00, 0x00, 0xC0, 0x00 }; static const u8 newabs_rslt[] = { 0x80, 0x00, 0x00, 0xC0, 0x00 }; static const u8 oldabs_mask[] = { 0xC0, 0x60, 0x00, 0xC0, 0x60 }; static const u8 oldabs_rslt[] = { 0xC0, 0x00, 0x00, 0x80, 0x00 }; const u8 *packet = psmouse->packet;
if (idx < 0 || idx > 4) return false;
switch (pkt_type) {
case SYN_NEWABS: case SYN_NEWABS_RELAXED: return (packet[idx] & newabs_rel_mask[idx]) == newabs_rslt[idx];
case SYN_NEWABS_STRICT: return (packet[idx] & newabs_mask[idx]) == newabs_rslt[idx];
case SYN_OLDABS: return (packet[idx] & oldabs_mask[idx]) == oldabs_rslt[idx];
default: psmouse_err(psmouse, "unknown packet type %d\n", pkt_type); return false; }}
static enum synaptics_pkt_typesynaptics_detect_pkt_type(struct psmouse *psmouse){ int i;
for (i = 0; i < 5; i++) { if (!synaptics_validate_byte(psmouse, i, SYN_NEWABS_STRICT)) { psmouse_info(psmouse, "using relaxed packet validation\n"); return SYN_NEWABS_RELAXED; } }
return SYN_NEWABS_STRICT;}
static psmouse_ret_t synaptics_process_byte(struct psmouse *psmouse){ struct synaptics_data *priv = psmouse->private;
if (psmouse->pktcnt >= 6) { /* Full packet received */ if (unlikely(priv->pkt_type == SYN_NEWABS)) priv->pkt_type = synaptics_detect_pkt_type(psmouse);
if (SYN_CAP_PASS_THROUGH(priv->info.capabilities) && synaptics_is_pt_packet(psmouse->packet)) { synaptics_pass_pt_packet(priv, psmouse->packet); } else { synaptics_process_packet(psmouse); }
return PSMOUSE_FULL_PACKET; }
return synaptics_validate_byte(psmouse, psmouse->pktcnt - 1, priv->pkt_type) ? PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;}
/***************************************************************************** * Driver initialization/cleanup functions ****************************************************************************/static void set_abs_position_params(struct input_dev *dev, struct synaptics_device_info *info, int x_code, int y_code){ int x_min = info->x_min ?: XMIN_NOMINAL; int x_max = info->x_max ?: XMAX_NOMINAL; int y_min = info->y_min ?: YMIN_NOMINAL; int y_max = info->y_max ?: YMAX_NOMINAL; int fuzz = SYN_CAP_REDUCED_FILTERING(info->ext_cap_0c) ? SYN_REDUCED_FILTER_FUZZ : 0;
input_set_abs_params(dev, x_code, x_min, x_max, fuzz, 0); input_set_abs_params(dev, y_code, y_min, y_max, fuzz, 0); input_abs_set_res(dev, x_code, info->x_res); input_abs_set_res(dev, y_code, info->y_res);}
static int set_input_params(struct psmouse *psmouse, struct synaptics_data *priv){ struct input_dev *dev = psmouse->dev; struct synaptics_device_info *info = &priv->info; int i; int error;
/* Reset default psmouse capabilities */ __clear_bit(EV_REL, dev->evbit); bitmap_zero(dev->relbit, REL_CNT); bitmap_zero(dev->keybit, KEY_CNT);
/* Things that apply to both modes */ __set_bit(INPUT_PROP_POINTER, dev->propbit);
input_set_capability(dev, EV_KEY, BTN_LEFT);
/* Clickpads report only left button */ if (!SYN_CAP_CLICKPAD(info->ext_cap_0c)) { input_set_capability(dev, EV_KEY, BTN_RIGHT); if (SYN_CAP_MIDDLE_BUTTON(info->capabilities)) input_set_capability(dev, EV_KEY, BTN_MIDDLE); }
if (!priv->absolute_mode) { /* Relative mode */ input_set_capability(dev, EV_REL, REL_X); input_set_capability(dev, EV_REL, REL_Y); return 0; }
/* Absolute mode */ set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
if (cr48_profile_sensor) input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
if (SYN_CAP_IMAGE_SENSOR(info->ext_cap_0c)) { set_abs_position_params(dev, info, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* Image sensors can report per-contact pressure */ input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
error = input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK); if (error) return error;
/* Image sensors can signal 4 and 5 finger clicks */ input_set_capability(dev, EV_KEY, BTN_TOOL_QUADTAP); input_set_capability(dev, EV_KEY, BTN_TOOL_QUINTTAP); } else if (SYN_CAP_ADV_GESTURE(info->ext_cap_0c)) { set_abs_position_params(dev, info, ABS_MT_POSITION_X, ABS_MT_POSITION_Y); /* * Profile sensor in CR-48 tracks contacts reasonably well, * other non-image sensors with AGM use semi-mt. */ error = input_mt_init_slots(dev, 2, INPUT_MT_POINTER | (cr48_profile_sensor ? INPUT_MT_TRACK : INPUT_MT_SEMI_MT)); if (error) return error;
/* * For semi-mt devices we send ABS_X/Y ourselves instead of * input_mt_report_pointer_emulation. But * input_mt_init_slots() resets the fuzz to 0, leading to a * filtered ABS_MT_POSITION_X but an unfiltered ABS_X * position. Let's re-initialize ABS_X/Y here. */ if (!cr48_profile_sensor) set_abs_position_params(dev, &priv->info, ABS_X, ABS_Y); }
if (SYN_CAP_PALMDETECT(info->capabilities)) input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
input_set_capability(dev, EV_KEY, BTN_TOUCH); input_set_capability(dev, EV_KEY, BTN_TOOL_FINGER);
if (synaptics_has_multifinger(priv)) { input_set_capability(dev, EV_KEY, BTN_TOOL_DOUBLETAP); input_set_capability(dev, EV_KEY, BTN_TOOL_TRIPLETAP); }
if (SYN_CAP_FOUR_BUTTON(info->capabilities) || SYN_CAP_MIDDLE_BUTTON(info->capabilities)) { input_set_capability(dev, EV_KEY, BTN_FORWARD); input_set_capability(dev, EV_KEY, BTN_BACK); }
if (!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) for (i = 0; i < SYN_CAP_MULTI_BUTTON_NO(info->ext_cap); i++) input_set_capability(dev, EV_KEY, BTN_0 + i);
if (SYN_CAP_CLICKPAD(info->ext_cap_0c)) { __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); if (psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10)) __set_bit(INPUT_PROP_TOPBUTTONPAD, dev->propbit); }
return 0;}
static ssize_t synaptics_show_disable_gesture(struct psmouse *psmouse, void *data, char *buf){ struct synaptics_data *priv = psmouse->private;
return sprintf(buf, "%c\n", priv->disable_gesture ? '1' : '0');}
static ssize_t synaptics_set_disable_gesture(struct psmouse *psmouse, void *data, const char *buf, size_t len){ struct synaptics_data *priv = psmouse->private; unsigned int value; int err;
err = kstrtouint(buf, 10, &value); if (err) return err;
if (value > 1) return -EINVAL;
if (value == priv->disable_gesture) return len;
priv->disable_gesture = value; if (value) priv->mode |= SYN_BIT_DISABLE_GESTURE; else priv->mode &= ~SYN_BIT_DISABLE_GESTURE;
if (synaptics_mode_cmd(psmouse, priv->mode)) return -EIO;
return len;}
PSMOUSE_DEFINE_ATTR(disable_gesture, S_IWUSR | S_IRUGO, NULL, synaptics_show_disable_gesture, synaptics_set_disable_gesture);
static void synaptics_disconnect(struct psmouse *psmouse){ struct synaptics_data *priv = psmouse->private;
/* * We might have left a breadcrumb when trying to * set up SMbus companion. */ psmouse_smbus_cleanup(psmouse);
if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(priv->info.identity)) device_remove_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_disable_gesture.dattr);
synaptics_reset(psmouse); kfree(priv); psmouse->private = NULL;}
static int synaptics_reconnect(struct psmouse *psmouse){ struct synaptics_data *priv = psmouse->private; struct synaptics_device_info info; u8 param[2]; int retry = 0; int error;
do { psmouse_reset(psmouse); if (retry) { /* * On some boxes, right after resuming, the touchpad * needs some time to finish initializing (I assume * it needs time to calibrate) and start responding * to Synaptics-specific queries, so let's wait a * bit. */ ssleep(1); } ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETID); error = synaptics_detect(psmouse, 0); } while (error && ++retry < 3);
if (error) return error;
if (retry > 1) psmouse_dbg(psmouse, "reconnected after %d tries\n", retry);
error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device.\n"); return error; }
error = synaptics_set_mode(psmouse); if (error) { psmouse_err(psmouse, "Unable to initialize device.\n"); return error; }
if (info.identity != priv->info.identity || info.model_id != priv->info.model_id || info.capabilities != priv->info.capabilities || info.ext_cap != priv->info.ext_cap) { psmouse_err(psmouse, "hardware appears to be different: id(%u-%u), model(%u-%u), caps(%x-%x), ext(%x-%x).\n", priv->info.identity, info.identity, priv->info.model_id, info.model_id, priv->info.capabilities, info.capabilities, priv->info.ext_cap, info.ext_cap); return -ENXIO; }
return 0;}
static bool impaired_toshiba_kbc;
static const struct dmi_system_id toshiba_dmi_table[] __initconst = {#if defined(CONFIG_DMI) && defined(CONFIG_X86) { /* Toshiba Satellite */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "Satellite"), }, }, { /* Toshiba Dynabook */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "dynabook"), }, }, { /* Toshiba Portege M300 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M300"), },
}, { /* Toshiba Portege M300 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), DMI_MATCH(DMI_PRODUCT_NAME, "Portable PC"), DMI_MATCH(DMI_PRODUCT_VERSION, "Version 1.0"), },
},#endif { }};
static bool broken_olpc_ec;
static const struct dmi_system_id olpc_dmi_table[] __initconst = {#if defined(CONFIG_DMI) && defined(CONFIG_OLPC) { /* OLPC XO-1 or XO-1.5 */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "OLPC"), DMI_MATCH(DMI_PRODUCT_NAME, "XO"), }, },#endif { }};
static const struct dmi_system_id __initconst cr48_dmi_table[] = {#if defined(CONFIG_DMI) && defined(CONFIG_X86) { /* Cr-48 Chromebook (Codename Mario) */ .matches = { DMI_MATCH(DMI_SYS_VENDOR, "IEC"), DMI_MATCH(DMI_PRODUCT_NAME, "Mario"), }, },#endif { }};
void __init synaptics_module_init(void){ impaired_toshiba_kbc = dmi_check_system(toshiba_dmi_table); broken_olpc_ec = dmi_check_system(olpc_dmi_table); cr48_profile_sensor = dmi_check_system(cr48_dmi_table);}
static int synaptics_init_ps2(struct psmouse *psmouse, struct synaptics_device_info *info, bool absolute_mode){ struct synaptics_data *priv; int err;
synaptics_apply_quirks(psmouse, info);
psmouse->private = priv = kzalloc_obj(*priv); if (!priv) return -ENOMEM;
priv->info = *info; priv->absolute_mode = absolute_mode; if (SYN_ID_DISGEST_SUPPORTED(info->identity)) priv->disable_gesture = true;
/* * Unfortunately ForcePad capability is not exported over PS/2, * so we have to resort to checking PNP IDs. */ priv->is_forcepad = psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids);
err = synaptics_set_mode(psmouse); if (err) { psmouse_err(psmouse, "Unable to initialize device.\n"); goto init_fail; }
priv->pkt_type = SYN_MODEL_NEWABS(info->model_id) ? SYN_NEWABS : SYN_OLDABS;
psmouse_info(psmouse, "Touchpad model: %lu, fw: %lu.%lu, id: %#x, caps: %#x/%#x/%#x/%#x, board id: %u, fw id: %u\n", SYN_ID_MODEL(info->identity), SYN_ID_MAJOR(info->identity), SYN_ID_MINOR(info->identity), info->model_id, info->capabilities, info->ext_cap, info->ext_cap_0c, info->ext_cap_10, info->board_id, info->firmware_id);
err = set_input_params(psmouse, priv); if (err) { psmouse_err(psmouse, "failed to set up capabilities: %d\n", err); goto init_fail; }
/* * Encode touchpad model so that it can be used to set * input device->id.version and be visible to userspace. * Because version is __u16 we have to drop something. * Hardware info bits seem to be good candidates as they * are documented to be for Synaptics corp. internal use. */ psmouse->model = ((info->model_id & 0x00ff0000) >> 8) | (info->model_id & 0x000000ff);
if (absolute_mode) { psmouse->protocol_handler = synaptics_process_byte; psmouse->pktsize = 6; } else { /* Relative mode follows standard PS/2 mouse protocol */ psmouse->protocol_handler = psmouse_process_byte; psmouse->pktsize = 3; }
psmouse->set_rate = synaptics_set_rate; psmouse->disconnect = synaptics_disconnect; psmouse->reconnect = synaptics_reconnect; psmouse->fast_reconnect = NULL; psmouse->cleanup = synaptics_reset; /* Synaptics can usually stay in sync without extra help */ psmouse->resync_time = 0;
if (SYN_CAP_PASS_THROUGH(info->capabilities)) synaptics_pt_create(psmouse);
/* * Toshiba's KBC seems to have trouble handling data from * Synaptics at full rate. Switch to a lower rate (roughly * the same rate as a standard PS/2 mouse). */ if (psmouse->rate >= 80 && impaired_toshiba_kbc) { psmouse_info(psmouse, "Toshiba %s detected, limiting rate to 40pps.\n", dmi_get_system_info(DMI_PRODUCT_NAME)); psmouse->rate = 40; }
if (!priv->absolute_mode && SYN_ID_DISGEST_SUPPORTED(info->identity)) { err = device_create_file(&psmouse->ps2dev.serio->dev, &psmouse_attr_disable_gesture.dattr); if (err) { psmouse_err(psmouse, "Failed to create disable_gesture attribute (%d)", err); goto init_fail; } }
return 0;
init_fail: kfree(priv); return err;}
static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode){ struct synaptics_device_info info; int error;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; }
return synaptics_init_ps2(psmouse, &info, absolute_mode);}
int synaptics_init_absolute(struct psmouse *psmouse){ return __synaptics_init(psmouse, true);}
int synaptics_init_relative(struct psmouse *psmouse){ return __synaptics_init(psmouse, false);}
static int synaptics_setup_ps2(struct psmouse *psmouse, struct synaptics_device_info *info){ bool absolute_mode = true; int error;
/* * The OLPC XO has issues with Synaptics' absolute mode; the constant * packet spew overloads the EC such that key presses on the keyboard * are missed. Given that, don't even attempt to use Absolute mode. * Relative mode seems to work just fine. */ if (broken_olpc_ec) { psmouse_info(psmouse, "OLPC XO detected, forcing relative protocol.\n"); absolute_mode = false; }
error = synaptics_init_ps2(psmouse, info, absolute_mode); if (error) return error;
return absolute_mode ? PSMOUSE_SYNAPTICS : PSMOUSE_SYNAPTICS_RELATIVE;}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
void __init synaptics_module_init(void){}
static int __maybe_unusedsynaptics_setup_ps2(struct psmouse *psmouse, struct synaptics_device_info *info){ return -ENOSYS;}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */
#ifdef CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS
/* * The newest Synaptics device can use a secondary bus (called InterTouch) which * provides a better bandwidth and allow a better control of the touchpads. * This is used to decide if we need to use this bus or not. */enum { SYNAPTICS_INTERTOUCH_NOT_SET = -1, SYNAPTICS_INTERTOUCH_OFF, SYNAPTICS_INTERTOUCH_ON,};
static int synaptics_intertouch = IS_ENABLED(CONFIG_RMI4_SMB) ? SYNAPTICS_INTERTOUCH_NOT_SET : SYNAPTICS_INTERTOUCH_OFF;module_param_named(synaptics_intertouch, synaptics_intertouch, int, 0644);MODULE_PARM_DESC(synaptics_intertouch, "Use a secondary bus for the Synaptics device.");
static int synaptics_create_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs){ bool topbuttonpad = psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10); const struct rmi_device_platform_data pdata = { .reset_delay_ms = 30, .sensor_pdata = { .sensor_type = rmi_sensor_touchpad, .axis_align.flip_y = true, .kernel_tracking = false, .topbuttonpad = topbuttonpad, }, .gpio_data = { .buttonpad = SYN_CAP_CLICKPAD(info->ext_cap_0c), .trackstick_buttons = !!SYN_CAP_EXT_BUTTONS_STICK(info->ext_cap_10), }, }; const struct i2c_board_info intertouch_board = { I2C_BOARD_INFO("rmi4_smbus", 0x2c), .flags = I2C_CLIENT_HOST_NOTIFY, };
return psmouse_smbus_init(psmouse, &intertouch_board, &pdata, sizeof(pdata), true, leave_breadcrumbs);}
/* * synaptics_setup_intertouch - called once the PS/2 devices are enumerated * and decides to instantiate a SMBus InterTouch device. */static int synaptics_setup_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs){ int error;
if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_OFF) return -ENXIO;
if (synaptics_intertouch == SYNAPTICS_INTERTOUCH_NOT_SET) { if (!psmouse_matches_pnp_id(psmouse, topbuttonpad_pnp_ids) && !psmouse_matches_pnp_id(psmouse, smbus_pnp_ids)) {
if (!psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) psmouse_info(psmouse, "Your touchpad (%s) says it can support a different bus. " "If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.\n", psmouse->ps2dev.serio->firmware_id);
return -ENXIO; } }
psmouse_info(psmouse, "Trying to set up SMBus access\n");
error = synaptics_create_intertouch(psmouse, info, leave_breadcrumbs); if (error) { if (error == -EAGAIN) psmouse_info(psmouse, "SMbus companion is not ready yet\n"); else psmouse_err(psmouse, "unable to create intertouch device\n");
return error; }
return 0;}
int synaptics_init_smbus(struct psmouse *psmouse){ struct synaptics_device_info info; int error;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; }
if (!SYN_CAP_INTERTOUCH(info.ext_cap_0c)) return -ENXIO;
return synaptics_create_intertouch(psmouse, &info, false);}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
static int __maybe_unusedsynaptics_setup_intertouch(struct psmouse *psmouse, struct synaptics_device_info *info, bool leave_breadcrumbs){ return -ENOSYS;}
int synaptics_init_smbus(struct psmouse *psmouse){ return -ENOSYS;}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
#if defined(CONFIG_MOUSE_PS2_SYNAPTICS) || \ defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
int synaptics_init(struct psmouse *psmouse){ struct synaptics_device_info info; int error; int retval;
psmouse_reset(psmouse);
error = synaptics_query_hardware(psmouse, &info); if (error) { psmouse_err(psmouse, "Unable to query device: %d\n", error); return error; }
if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) { if ((!IS_ENABLED(CONFIG_RMI4_SMB) || !IS_ENABLED(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)) && /* Forcepads need F21, which is not ready */ !psmouse_matches_pnp_id(psmouse, forcepad_pnp_ids)) { psmouse_warn(psmouse, "The touchpad can support a better bus than the too old PS/2 protocol. " "Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n"); }
error = synaptics_setup_intertouch(psmouse, &info, true); if (!error) return PSMOUSE_SYNAPTICS_SMBUS; }
retval = synaptics_setup_ps2(psmouse, &info); if (retval < 0) { /* * Not using any flavor of Synaptics support, so clean up * SMbus breadcrumbs, if any. */ psmouse_smbus_cleanup(psmouse); }
return retval;}
#else /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */
int synaptics_init(struct psmouse *psmouse){ return -ENOSYS;}
#endif /* CONFIG_MOUSE_PS2_SYNAPTICS || CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS */